While there are a couple of what I consider to be minor negatives with this product; namely it being fiddly to program initially and it being noisy when in operation, they aren't enough for me to drop my 5 star rating.
I have two large domestic shorthair cats and I have been using this feeder to dispense their food four times a day at the smallest food volume setting. My cats have a tendency to eat too much too fast which causes them to sometimes be sick, so feeding them little and often is the best way I've found to combat this. Like most people, I'm out during the day at work so manually feeding them small amounts at set intervals isn't very practical. Plus, also like most people, I sometimes want to be away from home occasionally for the weekend but need the cats to be fed in my absence. This feeder meets both my requirements well.
And even better, I have it set to start their feeds early enough in the morning that the cats aren't waking me up doing their 'feed me' routine that involved attacking my (closed) bedroom door, jumping up at the door handle then letting go so it made a *bang*, and even flinging themselves at the window above the bedroom door to peer and mew pitifully at me through the glass pane, holding onto the window ledge with their front paws while their back legs scrabbled for purchase on the door followed by a /thud/ when their front paws couldn't hold them up any longer and they dropped to the floor. Not the quietest way to be woken up in the morning ... scrabbling ... *bang* ... /thud/ ... pitiful meowing ... it was torture!